Oil-free mute household damping hinge

Abstract

The utility model relates to an oil-free mute household damping hinge which comprises a locking stud, a first hinge piece and a second hinge piece. The first hinge piece and the second hinge piece are rotationally connected to the locking stud. The first hinge piece comprises a first fixing plate, and two first hinge shaft sleeves corresponding to the locking studs are arranged on the inner side of the first fixing plate. The second hinge piece comprises a second fixing plate, and a second hinge shaft sleeve corresponding to the locking stud and the first hinge shaft sleeve is arranged on the inner side of the second fixing plate. The locking stud is connected with a damping assembly in a sleeved mode. The damping assembly is located in the first hinge shaft sleeve and the second hinge shaft sleeve. The hinge is ingenious in design, through the special plastic sleeve structure, the hinge is mute, the anti-attenuation degree of torsional force is better, and good function requirements of rotating components such as sofa armrests and sofa headrests are met on household products.

Description

Technical Field

[0001] The utility model belongs to the technical field of hinges, and in particular relates to an oil-free and silent household damping hinge. Background Art

[0002] Home hinges are widely used in daily life. They are usually metal parts used to connect two parts of a home and enable them to move. Hinges occupy an important position in home accessories and are mainly used in sofas.

[0003] Conventional damping hinges for household appliances typically use damping oil or simple plastic plugs for screw damping. Oil-damped hinges are subject to the risk of oil leakage over time, while damping hinges made from single-ended plastic components are typically die-cast alloy hinges, and their damping torque gradually decreases with use (typically around 3,000-5,000 times). Damping hinges made from sheet metal are prone to deformation of the mounting surface during assembly (fixed by air pressure), affecting the damping and quieting effect.

[0004] In view of the above technical problems, improvements need to be made. Utility Model Content

[0005] The utility model aims to overcome the defects in the prior art and provide an oil-free and silent household damping hinge with a simple and reasonable structure and overall firmness.

[0006] In order to achieve the above objectives, the technical solution adopted by the present invention is: an oil-free and silent household damping hinge, characterized in that: it includes a locking stud, a first hinge piece and a second hinge piece respectively rotatably connected to the locking stud; the first hinge piece includes a first fixed plate, and two first hinge shaft sleeves corresponding to the locking stud are provided on the inner side of the first fixed plate, and the end of the first fixed plate is tangent to the first hinge shaft sleeve, and the first fixed plate and the first hinge shaft sleeve are integrally formed; the second hinge piece includes a second fixed plate, and a second hinge shaft sleeve corresponding to the locking stud and the first hinge shaft sleeve is provided on the inner side of the second fixed plate; the second fixed plate and the second hinge shaft sleeve are integrally formed; a damping component is sleeved on the locking stud; the damping component is located in the first hinge shaft sleeve and the second hinge shaft sleeve.

[0007] As a preferred embodiment of the present invention, the damping assembly includes an anti-attenuation shrinkage plastic sleeve and two plastic locking sleeves; the two plastic locking sleeves are sleeved on the locking studs and built into the first hinge shaft sleeve; the anti-attenuation shrinkage plastic sleeve is sleeved on the connection between the two plastic locking sleeves and built into the second hinge shaft sleeve.

[0008] As a preferred embodiment of the present invention, the plastic locking sleeve includes a locking mounting portion and a locking connecting portion in a stepped structure; the locking mounting portion is built into the first hinge shaft sleeve, and the locking connecting portion is outer-connected with an anti-shrinkage plastic sleeve.

[0009] As a preferred embodiment of the present invention, a locking guide portion is formed at the front end of the locking connection portion, and the end of the locking guide portion is an arc transition structure.

[0010] As a preferred embodiment of the present invention, the locking mounting portion, the locking connecting portion and the locking guide portion are fixedly connected and integrally formed.

[0011] As a preferred embodiment of the present invention, locking protrusions are arranged on the outside of the locking mounting portion along its length direction, and correspondingly, locking grooves adapted to the locking protrusions are formed on the inside of the first hinge shaft sleeve.

[0012] As a preferred embodiment of the present invention, a plastic gasket is installed between the second hinge shaft sleeve and the two first hinge shaft sleeves, and the plastic gasket is sleeved on the locking connection part.

[0013] As a preferred embodiment of the present invention, outer end surfaces of the first hinge shaft sleeve, the plastic gasket and the second hinge shaft sleeve are in the same horizontal plane.

[0014] As a preferred embodiment of the present invention, the outer side of the anti-decay plastic sleeve is provided with limiting protrusions along its length direction, and correspondingly, the inner side of the second hinge shaft sleeve is formed with limiting grooves adapted to the limiting protrusions.

[0015] As a preferred embodiment of the present invention, a locking thread is formed at the end of the locking stud, and a locking nut is installed on the locking thread.

[0016] The beneficial effects of the utility model are:

[0017] 1. The utility model has a simple structure. A damping component is sleeved on the locking stud; the damping component is located in the first hinge shaft sleeve and the second hinge shaft sleeve, so that the damping component on the locking stud and the first hinge shaft sleeve and the second hinge shaft sleeve are in the process of rotation; effectively reducing the rotation noise and ensuring the smoothness of rotation.

[0018] 2. The oil-free and silent household damping hinge of the utility model can replace the original installation method using screws and springs. It has a simple structure and is easy to assemble and disassemble. In addition, the anti-decay plastic sleeve and the plastic locking sleeve can prevent the first hinge piece and the second hinge piece from rubbing against the locking stud, playing a protective role and having a long service life.

[0019] 3. The structure of the utility model is oil-free, and there is no quality risk of oil leakage. The internal structure is adjusted to a double-headed plastic locking sleeve for locking and fixing, and a specially shaped anti-attenuation shrinkage plastic sleeve is added in the middle to reduce the risk of abnormal noise caused by radius deformation caused by assembly during the assembly process. The special anti-attenuation shrinkage plastic sleeve is used to improve the anti-attenuation of torque during use.

[0020] 4. The utility model is cleverly designed. Through the special structure of the plastic sleeve, the hinge is silent and has a better degree of resistance to torsional attenuation. In home products, it can meet the good functional requirements of rotating parts such as sofa armrests and sofa headrests. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0022] Figure 2 This is an exploded view of the structure of an embodiment of the utility model;

[0023] Figure 3 This is a schematic structural diagram of a plastic locking sleeve according to an embodiment of the present utility model;

[0024] Figure 4 This is a schematic structural diagram of an anti-attenuation shrinkage plastic sleeve according to an embodiment of the present utility model;

[0025] 1 , a locking nut 1 , a plastic locking sleeve 2 , a plastic gasket 3 , an anti-shrinkage plastic sleeve 4 , a limiting protrusion 4 - 1 , a first hinge piece 5 , a first fixing plate 5 - 1 , a first hinge shaft sleeve 5 - 2 , a locking groove 5 - 4 , a second hinge piece 6 , a limiting groove 6 - 1 , a second fixing plate 6 - 2 , a second hinge shaft sleeve 6 - 3 , a locking stud 7 , a locking thread 7 - 1 , a damping assembly 10 , a locking mounting portion 20 , a locking protrusion 20 - 1 , a locking connecting portion 21 , a locking guide portion 22 , and an arc transition structure 22 - 1 . DETAILED DESCRIPTION

[0026] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings.

[0027] Example:

[0028] like Figure 1-4As shown, the oil-free and silent home damping hinge provided in this embodiment solves the problems of abnormal noise and oil leakage of damping hinges in sofas compared with the prior art; specifically, it includes a locking stud 7, a first hinge piece 5 and a second hinge piece 6 respectively rotatably connected to the locking stud 7; the first hinge piece 5 includes a first fixing plate 5-1, and two first hinge shaft sleeves 5-2 corresponding to the locking stud 7 are provided on the inner side of the first fixing plate 5-1, and the end of the first fixing plate 5-1 is tangent to the first hinge shaft sleeve 5-2, and the first fixing plate 5-1 and the first hinge shaft sleeve 5-2 are integrally formed; the second hinge piece 6 includes a second fixing plate 6-2, and a second hinge sleeve 6-3 corresponding to the locking stud 7 and the first hinge sleeve 5-2 is provided on the inner side of the second fixing plate 6-2; the second fixing plate 6-2 and the second hinge sleeve 6-3 are formed as one piece; a damping component 10 is sleeved on the locking stud 7; the damping component 10 is located in the first hinge sleeve 5-2 and the second hinge sleeve 6-3; the integrally formed first hinge piece 5 and second hinge piece 6 make the damping hinge structure stronger, and at the same time, increase the overall strength of the damping hinge, enhance the safety and stability of use, and ensure safe use.

[0029] The utility model has a simple structure. A damping component 10 is sleeved on the locking stud 7. The damping component 10 is located in the first hinge shaft sleeve 5-2 and the second hinge shaft sleeve 6-3, so that the damping component 10 on the locking stud 7 and the first hinge shaft sleeve 5-2 and the second hinge shaft sleeve are in the rotation process; the rotation noise is effectively reduced and the rotation smoothness is ensured.

[0030] At the same time, the structure of this utility model is oil-free, and there is no quality risk of oil leakage. The internal structure is adjusted to a double-headed plastic locking sleeve for locking and fixing, and a specially shaped anti-attenuation shrinkage plastic sleeve is added in the middle to reduce the risk of abnormal noise caused by radius deformation caused by assembly during the assembly process. The special anti-attenuation shrinkage plastic sleeve is used to improve the anti-attenuation of torque usage times.

[0031] Specifically, the damping assembly 10 includes an anti-decay shrinkage plastic sleeve 4 and two plastic locking sleeves 2; the two plastic locking sleeves 2 are sleeved on the locking studs 7 and built into the first hinge shaft sleeve 5-2; the anti-decay shrinkage plastic sleeve 4 is sleeved on the connection between the two plastic locking sleeves 2 and built into the second hinge shaft sleeve 6-3; the oil-free and silent household damping hinge of the utility model can replace the original installation method using screws and springs, with a simple structure and easy assembly and disassembly, and the anti-decay shrinkage plastic sleeve and the plastic locking sleeve can prevent the first hinge piece and the second hinge piece from rubbing against the locking studs, play a protective role, and have a long service life.

[0032] like Figure 3-Figure 4 FIG. 1 is a structural diagram of a plastic locking sleeve according to an embodiment of the present invention; Figure 4It is a structural schematic diagram of the anti-attenuation shrinkage plastic sleeve of an embodiment of the present utility model; specifically, the plastic locking sleeve 2 includes a locking mounting portion 20 and a locking connecting portion 21 with a step-shaped structure; the locking mounting portion 20 is built into the first hinge shaft sleeve 5-2, and the locking connecting portion 21 is outer-connected with the anti-attenuation shrinkage plastic sleeve 4; in addition to forming the above-mentioned damping force effect, the plastic locking sleeve 2 also has an anti-silence effect by preventing direct contact with the first hinge piece 5 and the second hinge piece 6.

[0033] The anti-decay plastic sleeve 4 and the plastic locking sleeve 2 actually play the main rotation role in the hinge rotation process, that is, the internal rotation between the plastic sleeves. Compared with the conventional plastic sleeve and metal rotation process on the market, the screw loosening is smaller after the number of rotations increases, and the anti-decay force performance is therefore better.

[0034] A locking guide portion 22 is formed at the front end of the locking connection portion 21, and the end of the locking guide portion 22 is an arc transition structure 22-1; this facilitates the insertion of the anti-attenuation shrinkage plastic sleeve 4 into the locking guide portion 22, thereby improving the assembly efficiency between the two.

[0035] The locking mounting portion 20, the locking connecting portion 21 and the locking guide portion 22 are fixedly connected and integrally formed, thereby improving the structural strength and overall firmness of the entire plastic locking sleeve 2 and further ensuring safety in use.

[0036] A locking protrusion 20 - 1 is arranged on the outside of the locking mounting portion 20 along its length direction. Correspondingly, a locking groove 5 - 4 adapted to the locking protrusion 20 - 1 is formed on the inside of the first hinge shaft sleeve 5 - 2 .

[0037] The two plastic locking sleeves 2 of the utility model are sleeved on the inner side of the first hinge shaft sleeve 5-2, with better sealing and higher aesthetics. Compared with the traditional contact between iron and nylon, they have better wear resistance. At the same time, both sides of the two plastic locking sleeves 2 and the inner wall of the first hinge shaft sleeve 5-2 are made of nylon material, and the force is evenly distributed. The locking protrusion 20-1 is adapted to be snap-fitted with the locking groove 5-4, and the buckle makes the connection more stable and safer to use.

[0038] The main functions of the anti-attenuation shrinkage plastic sleeve 4 provided in the present invention are: to enhance the quiet effect and the risk of abnormal noise caused by the deformation of the first hinge piece 5 and the second hinge piece 6; when the first hinge piece 5 and the second hinge piece 6 are assembled on the household product due to the air pressure gun screw, they are slightly deformed, and the installation axes of the first hinge piece 5 and the second hinge piece 6 will be slightly misaligned. The anti-attenuation shrinkage plastic sleeve 4 plays a protective, buffering and replacement role for the actual hinge rotation axis.

[0039] A plastic gasket 3 is installed between the second hinge shaft sleeve 6-3 and the two first hinge shaft sleeves 5-2, and the plastic gasket 3 is sleeved on the locking connection part 21; the function of the set gasket 3 is to be transferred between the first hinge piece 5 and the second hinge piece 6, and after locking, it prevents metal from scratching and making abnormal noise during rotation.

[0040] The outer end surfaces of the first hinge shaft sleeve 5-2, the plastic gasket 3 and the second hinge shaft sleeve 6-3 are on the same horizontal plane, thereby improving the overall aesthetics.

[0041] A limiting protrusion 4-1 is arranged on the outside of the anti-decaying shrinkage plastic sleeve 4 along its length direction, and correspondingly, a limiting groove 6-1 adapted to the limiting protrusion 4-1 is formed on the inner side of the second bearing sleeve 6-3; the limiting protrusion 4-1 set on the anti-decaying shrinkage plastic sleeve 4 and the limiting groove 6-1 set on the second bearing sleeve 6-3 cooperate with each other to form a fixed angle, and its structure is positioned to the radius groove. On the one hand, it fills the gap and improves the aesthetics of the sheet metal hinge. On the other hand, it fixes the angle and drives the rotation of the anti-decaying shrinkage plastic sleeve 4; and the triangular position angle of the limiting protrusion 4-1 of the anti-decaying shrinkage plastic sleeve 4 is staggered to achieve the fixed starting position of the hinge when it is 180° unfolded.

[0042] A locking thread 7-1 is formed at the end of the locking stud 7, and a locking nut 1 is installed on the locking thread 7-1. The locking nut 1 is used to tighten the locking stud 7. The end of the plastic locking sleeve 2 is formed with an inner groove. When the locking stud 7 is assembled with the first hinge piece 5 and the second hinge piece 6, the end of the locking stud 7 and the locking nut 1 are built into the inner groove, thereby improving the overall aesthetics.

[0043] The present embodiment provides an oil-free and silent household damping hinge, the basic working principle of which is as follows: damping is mainly achieved through threaded locking of the locking stud 7 and the locking nut 1, which squeezes and compresses the plastic locking sleeve 2 to form a combined upper and lower force; the plastic locking sleeve 2 is squeezed and pressed together up and down, and is tightened back and forth to form a first damping force; at the same time, the plastic locking sleeve 2 is squeezed up and down to synchronously produce a slight expansion deformation, and the anti-attenuation plastic sleeve 4 in the middle evenly expands at both ends to form a second damping force; a final resistance is formed to achieve a damping effect.

[0044] The above description of the disclosed embodiments will enable those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

[0045] Although this article uses the following figures more frequently: locking nut 1, plastic locking sleeve 2, plastic gasket 3, anti-decay plastic sleeve 4, limiting protrusion 4-1, first hinge piece 5, first fixed plate 5-1, first hinge shaft sleeve 5-2, locking groove 5-4, second hinge piece 6, limiting groove 6-1, second fixed plate 6-2, second hinge shaft sleeve 6-3, locking stud 7, locking thread 7-1, damping assembly 10, locking mounting part 20, locking protrusion 20-1, locking connecting part 21, locking guide part 22, arc transition structure 22-1 and other terms, it does not exclude the possibility of using other terms; these terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. An oil-free and silent home damping hinge, characterized by: The invention comprises a locking stud (7), a first hinge piece (5) and a second hinge piece (6) respectively rotatably connected to the locking stud (7); the first hinge piece (5) comprises a first fixing plate (5-1), and two first hinge shaft sleeves (5-2) corresponding to the locking stud (7) are provided on the inner side of the first fixing plate (5-1); the second hinge piece (6) comprises a second fixing plate (6-2), and a second hinge shaft sleeve (6-3) corresponding to the locking stud (7) and the first hinge shaft sleeve (5-2) is provided on the inner side of the second fixing plate (6-2); a damping component (10) is sleeved on the locking stud (7); the damping component (10) is located in the first hinge shaft sleeve (5-2) and the second hinge shaft sleeve (6-3).

2. The oil-free and silent home damping hinge according to claim 1, characterized in that: The damping assembly (10) comprises an anti-decay shrinkage plastic sleeve (4) and two plastic locking sleeves (2); the two plastic locking sleeves (2) are sleeved on the locking studs (7) and built into the first hinge shaft sleeve (5-2); the anti-decay shrinkage plastic sleeve (4) is sleeved on the connection between the two plastic locking sleeves (2) and built into the second hinge shaft sleeve (6-3).

3. The oil-free and silent home damping hinge according to claim 2, characterized in that: The plastic locking sleeve (2) comprises a locking mounting portion (20) and a locking connecting portion (21) in a stepped structure; the locking mounting portion (20) is built into the first hinge shaft sleeve (5-2), and the locking connecting portion (21) is externally connected with an anti-shrinkage plastic sleeve (4).

4. The oil-free and silent home damping hinge according to claim 3, characterized in that: A locking guide portion (22) is formed at the front end of the locking connection portion (21), and the end of the locking guide portion (22) is in an arc transition structure (22-1).

5. The oil-free and silent home damping hinge according to claim 4, characterized in that: The locking mounting portion (20), the locking connecting portion (21) and the locking guiding portion (22) are fixedly connected and integrally formed.

6. The oil-free and silent home damping hinge according to claim 3, characterized in that: The locking mounting portion (20) is provided with a locking protrusion (20-1) along its length direction on the outside, and correspondingly, a locking groove (5-4) adapted to the locking protrusion (20-1) is formed on the inside of the first hinge shaft sleeve (5-2).

7. The oil-free and silent home damping hinge according to claim 3, characterized in that: A plastic gasket (3) is installed between the second hinge shaft sleeve (6-3) and the two first hinge shaft sleeves (5-2), and the plastic gasket (3) is sleeved on the locking connection part (21).

8. The oil-free and silent home damping hinge according to claim 7, characterized in that: The outer end surfaces of the first hinge shaft sleeve (5-2), the plastic gasket (3) and the second hinge shaft sleeve (6-3) are on the same horizontal plane.

9. The oil-free and silent home damping hinge according to claim 3, characterized in that: The outer side of the anti-decay plastic sleeve (4) is provided with a limiting protrusion (4-1) along its length direction, and correspondingly, the inner side of the second hinge shaft sleeve (6-3) is formed with a limiting groove (6-1) adapted to the limiting protrusion (4-1).

10. The oil-free and silent home damping hinge according to claim 1, characterized in that: A locking thread (7-1) is formed at the end of the locking stud (7), and a locking nut (1) is mounted on the locking thread (7-1).

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